铝合金中的溶质原子团簇及其强韧化
Aluminum Alloys: Solute Atom Clusters and Their Strengthening
铝合金中的溶质原子团簇及其强韧化 |
| 刘刚, 张鹏, 杨冲, 张金钰, 孙军 |
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Aluminum Alloys: Solute Atom Clusters and Their Strengthening |
| LIU Gang, ZHANG Peng, YANG Chong, ZHANG Jinyu, SUN Jun |
| 图3 Al-4.75%Zn-1.39%Mg合金自然时效1440 h的APT像(尺寸：225 nm × 56 nm × 56 nm)，不同拉伸应变下(0、7%、13%和20%) Zn-Mg团簇的APT统计结果，约化团簇尺寸随变形量变化的实验结果与模拟结果对比，以及不同时效状态下的拉伸应力-应变曲线[ |
| Fig.3 Representative APT images to show the Zn and Mg atom distribution and Zn-Mg clusters in the Al-4.75%Zn-1.39%Mg alloy naturally aged for 1440 h (60 d) (size: 225 nm × 56 nm × 56 nm) (a), statistical results on the size and density of the Zn-Mg cluster in the 1440 h-sample stretched to different strains (ε) of 0, 7%, 13%, and 20% (b), evolution of the normalized average cluster size on the stretched strain: experimental results (dots) vs model predictions (curves) (c), and tensile stress-strain curves of the as-quenched (AQ), naturally-aged (NA) 24 h, 5 d, 60 d, peak-aged T6, and over-aged T7 samples, for comparison (d)[ |
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